General MCQ

General MCQ

1. Reinforcement is the _______ in a relationship

Answer

Correct Answer: Reward

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2. An attribute is also referred to as a ________.

Answer

Correct Answer: Field

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3. By converting a distribution of observations into z-scores a new distribution is created that has a mean of ______and a standard deviation of _____.

Answer

Correct Answer: 0, 1

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4. Yate's continuity correction is an adjustment made to the ________ test when the contingency table is 2 rows by 2 columns

Answer

Correct Answer: Chi-square

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5. Y-axis is the ________ axis of a graph

Answer

Correct Answer: Vertical

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6. X-axis is also known as ordinate

Answer

Correct Answer: False

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7. Another name for a 'repeated-measures design'

Answer

Correct Answer: Within-subject design

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8. Winsorizing is a method for reducing the impact of

Answer

Correct Answer: A & B

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9. A version of the ________ designed to be accurate when the assumption of homogeneity of variance has been violated.

Answer

Correct Answer: F-ration

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10. Weight is a number by which something (usually a variable in statistics) is

Answer

Correct Answer: Multiplied

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11. The VIF indicates whether a predictor has a _____________ with the other predictor(s).

Answer

Correct Answer: Strong linear relationship

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12. Variance is an estimate of _________ of a set of scores.

Answer

Correct Answer: Average variability

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13. Variables

Answer

Correct Answer: None of the above

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14. Validity is evidence that a study allows correct inferences about the question it was aimed to answer

Answer

Correct Answer: True

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15. Upper quartile is the value that cuts off the highest _____ of ordered scores.

Answer

Correct Answer: 25%

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16. Unsystematic variation is variation that is due to the effect in which we are interested

Answer

Correct Answer: False

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17. For A & B union is the probability of

Answer

Correct Answer: A or B occurring

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18. Unbiased estimator is a statistic from a sample that ________ the corresponding population parameter.

Answer

Correct Answer: Equals

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19. Type ____ error occurs when we believe that there is no effect in the population when, in reality, there is

Answer

Correct Answer: II

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20. Type ____ error occurs when we believe that there is a genuine effect in our population, when in fact there isn't

Answer

Correct Answer: I

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21. Two-way design is an experimental design incorporating

Answer

Correct Answer: A or B

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22. Two-tailed test is a test of a ____________ hypothesis

Answer

Correct Answer: Non-directional

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23. Trimmed mean produces accurate results even only the distribution is symmetrical.

Answer

Correct Answer: False

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24. Trimmed data is a data after a certain percentage of the distribution has been removed at the

Answer

Correct Answer: Extremes

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25. In probability theory, a trial is a repetition of an experiment

Answer

Correct Answer: True

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26. To correct some distributional abnormality such as skew or kurtosis, or converting to a z-score are included in

Answer

Correct Answer: Transformation

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27. Total sum of squares is a measure of the total_________ within a set of observations

Answer

Correct Answer: Variability

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28. Tolerance is the _______ of the variance inflation factor

Answer

Correct Answer: Reciprocal

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29. An experimental design incorporating three categorical predictors (or independent variables) is known as

Answer

Correct Answer: Three-way design

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30. New hypothesis can be generated from a theory

Answer

Correct Answer: True

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31. A statistic for which we know how frequently different values occur is known as

Answer

Correct Answer: Test statistic

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32. Test-retest reliability is the ability of a measure to produce ________ results when the same entities are tested at two different points in time

Answer

Correct Answer: Consistent

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33. Tertium quid is often called

Answer

Correct Answer: Third-variable problem

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34. A family of probability distributions describing samples taken from a population that is normally distributed is known as

Answer

Correct Answer: T-distribution

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35. Systematic variation is a variation due to some genuine effect

Answer

Correct Answer: True

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36. SS is the sum of

Answer

Correct Answer: Squared deviances

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37. Sum of squared errors is opposite to sum of squares

Answer

Correct Answer: False

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38. Statistic is usually computed from the

Answer

Correct Answer: Sample

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39. Standardized distributions are usually used to make comparable distributions incomparable.

Answer

Correct Answer: False

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40. Standardization is the process of converting a ________ into a standard unit of measurement.

Answer

Correct Answer: Variable

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41. Standard normal distribution has a mean of

Answer

Correct Answer: 0

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42. Standard error of the mean is standard error associated with the mean

Answer

Correct Answer: True

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43. Standard error of differences is a measure of the variability of differences between sample means.

Answer

Correct Answer: Means

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44. Standard error is the standard deviation of the sampling distribution of a statistic.

Answer

Correct Answer: True

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45. Standard deviation is the ______ of variance

Answer

Correct Answer: Square root

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46. Sphericity is the assumption that the variances of the differences between scores from the same entity across different treatments are

Answer

Correct Answer: Equal

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47. Spearman's rho is a standardized measure of the strength of relationship between ________ that does not rely on the assumptions of the linear model.

Answer

Correct Answer: Two variables

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48. Symmetrical distributions have a skew of

Answer

Correct Answer: 0

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49. Simple regression model takes the form in which Y is

Answer

Correct Answer: Outcome variable

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50. Simple effect analysis looks at the effect of one independent variable (categorical predictor variable) at individual levels of

Answer

Correct Answer: Another independent variable

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51. Shapiro-Wilk test is a test of whether a distribution of scores is significantly different from a normal distribution

Answer

Correct Answer: True

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52. A score is collection of measurements or observations of many instances of a variable

Answer

Correct Answer: False

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53. A graph that plots values of one variable against the corresponding value of another variable is known as

Answer

Correct Answer: Scatterplot

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54. Sampling without replacement is when a sample is constructed from a population or sample space such that after an entity is selected to be in the sample, it is taken out of the

Answer

Correct Answer: A or B

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55. When a sample is constructed from a population or sample space such that after an entity is selected to be in the sample, it is put back into the population or sample space. It is known as

Answer

Correct Answer: Sampling without replacement

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56. Sampling variation includes ______ variation

Answer

Correct Answer: All of the above

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57. The difference between the value of a population parameter, and the value estimated from the sample is known as

Answer

Correct Answer: Sampling error

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58. __________ is the probability distribution of a statistic.

Answer

Correct Answer: Sampling variation

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59. In empirical probability theory, the sample space is the set of observed outcomes of several trials of an experiment.

Answer

Correct Answer: True

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60. The mean of a sample of scores is known as

Answer

Correct Answer: Sample mean

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61. A sample is a ________ collection of units from a population used to determine truths about that population

Answer

Correct Answer: Both A & B

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62. Robust estimation is a term applied to procedures to estimate statistics or the standard errors and confidence intervals of statistics that are not unduly biased by the shape of the

Answer

Correct Answer: All of the above

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63. Reverse scoring is done by subtracting the score on a reverse-phrased item from the maximum score for that item plus the minimum score.

Answer

Correct Answer: True

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64. Reverse phrasing are normally questions on a survey are phrased so that a ______ response represents more of the construct being measured

Answer

Correct Answer: Large

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65. Response bias is a general term for participants giving responses that reflect their true beliefs

Answer

Correct Answer: False

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66. The difference between the value a model predicts and the value observed in the data on which the model is based is known as

Answer

Correct Answer: Residual

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67. An experimental design in which different treatment conditions utilize the same entities and so the resulting data are related; is known as

Answer

Correct Answer: All of the above

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68. Reliability is the ability of a measure to produce consistent results when the ________ entities are measured under different conditions

Answer

Correct Answer: Same

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69. Relative frequency is the frequency of a__________ expressed relative to the total number of observations

Answer

Correct Answer: All of the above

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70. Related design is another name for a repeated-measures design

Answer

Correct Answer: True

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71. Regression line is a line on a _______ representing the regression model of the relationship between the two variables plotted

Answer

Correct Answer: Scatterplot

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72. Raw score is a score

Answer

Correct Answer: All of the above

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73. In ratio scale zero is a

Answer

Correct Answer: Meaningful value

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74. In raw score ranking the the lowest score is assigned a rank

Answer

Correct Answer: 1

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75. ________ a measure of the dispersion of a set of scores

Answer

Correct Answer: Range

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76. If the entities in a population or sample space have an equal chance of being selected then a sample resulting from this selection process is a

Answer

Correct Answer: Random sample

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77. Quasi-experimental design is a research design in which the experimenter has ______ over either the allocation of participants to conditions, or the timing of the experimental manipulations

Answer

Correct Answer: No control

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78. Quartile is a generic term for the_______ values that cut an ordered data set into four equal parts.

Answer

Correct Answer: Three

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79. Qualitative method refers to Inferring evidence for a theory through measurement of variables that produce numeric outcomes.

Answer

Correct Answer: False

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80. Quantiles include

Answer

Correct Answer: All of the above

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81. Qualitative methods refer to extrapolating evidence for a theory from what people say or write.

Answer

Correct Answer: True

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82. Proportion is the frequency of a particular__________ relative to the total number of scores.

Answer

Correct Answer: Both

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83. Programmable matter is matter that can change from one ________ form to another

Answer

Correct Answer: Physical

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84. For categorical variables probability distribution is simply a formula yielding the probability with which each category occurs.

Answer

Correct Answer: True

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85. The function that describes the probability of a ________ variable taking a certain value.

Answer

Correct Answer: Random

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86. The_______ of an event is the number of times the event occurs divided by the total number of possible events (i.e., the sample space)

Answer

Correct Answer: Probability

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87. When using Bayes' theorem to test a hypothesis, the prior probability is our belief in a hypothesis or model ________ considering the data

Answer

Correct Answer: Before

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88. In Bayesian hypothesis testing, the prior odds are the probability of the ________ hypothesis divided by the probability of the ________ hypothesis

Answer

Correct Answer: Alternative, null

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89. A variable that is used to try to predict values of another variable ,known as an outcome variable, is called

Answer

Correct Answer: Predictor variable

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90. Predictive validity is a form of criterion validity where there is evidence that________ from an instrument predict external measures

Answer

Correct Answer: Scores

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91. Predicted value is the value of an outcome variable based on specific values of the ________ or variables being placed into a statistical model

Answer

Correct Answer: Predictor variable

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92. In statistics, precision has a definition of 1/ variance

Answer

Correct Answer: True

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93. Practice effect refers to the possibility that participants' performance in a task may be influence___________ if they repeat the task because of familiarity with the experimental situation and/or the measures being used

Answer

Correct Answer: Both

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94. The ability of a test to detect an effect of a particular size is known as

Answer

Correct Answer: Power

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95. A set of comparisons between group means that were not thought of before data were collected is known as

Answer

Correct Answer: Post hoc tests

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96. Posterior probability is the ________ conditional probability of the likelihood.

Answer

Correct Answer: Inverse

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97. The ratio of posterior probability for one hypothesis to another is known as

Answer

Correct Answer: Posterior odds

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98. Platykurtic is a distribution with _______ kurtosis

Answer

Correct Answer: Negative

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99. Planned contrasts are a set of comparisons between group means that are constructed ______ any data is collected.

Answer

Correct Answer: Before

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100. Two predictors that are perfectly correlated they have a correlation coefficient of

Answer

Correct Answer: 1

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101. Percentiles are values that split the data into ______ equal parts

Answer

Correct Answer: 100

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102. Percentile bootstrap confidence interval is constructed empirically by taking several (e.g., 1000)

Answer

Correct Answer: Bootstrap samples

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103. Percentage bend correlation is robust statistic to measure the __________ between two variables

Answer

Correct Answer: Linear relationship

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104. Pearson's correlation coefficient can take the value of

Answer

Correct Answer: Any of the above

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105. Which of the following is a measure of the relationship between two variables while adjusting for the effect of one or more additional variables on both

Answer

Correct Answer: Partial correlation

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106. Parameters are estimated from the data and are (usually) _______ believed to represent some fundamental truth about the relations between variables.

Answer

Correct Answer: Constant

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107. Pairwise comparisons are comparisons of pairs of

Answer

Correct Answer: Means

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108. Paired-samples t-test a test using the t-statistic that establishes whether two standard deviations ollected from the same sample (or related observations) are same.

Answer

Correct Answer: False

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109. P-value is the name often used for the probability of observing a test statistic at least as big as the one observed if the ______ hypothesis were true.

Answer

Correct Answer: Null

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110. Outlier is an observation or observations very different from most others

Answer

Correct Answer: True

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111. A variable whose values we are trying to predict from one or more predictor variables is known as

Answer

Correct Answer: Outcome variable

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112. Outcome is an unmeasurable result of some process.

Answer

Correct Answer: False

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113. Orthogonal means _________ to something

Answer

Correct Answer: Perpendicular

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114. Y-axis is also known as

Answer

Correct Answer: Ordinate

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115. Ordinal scale is a scale that tells us

Answer

Correct Answer: A & B

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116. Operational definition is a procedure (or set of procedures) for determining and quantifying the existence of something.

Answer

Correct Answer: True

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117. One-tailed test is a test of non-directional hypothesis

Answer

Correct Answer: False

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118. Omega squared is an effect size measure associated with comparing

Answer

Correct Answer: Several means

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119. An odds ratio of____ would indicate that the odds of a particular outcome are equal in both groups.

Answer

Correct Answer: 1

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120. The probability of an event occurring divided by the probability of that event not occurring is known as

Answer

Correct Answer: Odds

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121. If NHST is below ____ , then the null hypothesis is rejected and the alternative hypothesis is accepted

Answer

Correct Answer: 0.05

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122. A null hypothesis is ______ true

Answer

Correct Answer: Never

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123. Normal distribution is perfectly symmetrical and has a kurtosis of

Answer

Correct Answer: 3

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124. Noniles are q type of quantile; they are values that split the data into ____ equal parts

Answer

Correct Answer: 9

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125. Nominal scale is a scale on which numbers represent

Answer

Correct Answer: Names

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126. NHST is common abbreviation for 'null hypothesis significance testing'

Answer

Correct Answer: True

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127. A distribution with negative kurtosis (platykurtic, kurtosis < 0) has _____ scores in the tails and is quite ____

Answer

Correct Answer: Too few, flat

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128. In probability, outcomes are mutually exclusive or disjoint if the probability of their intersection is

Answer

Correct Answer: 0

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129. Multiple regression is a linear model in which an outcome is predicted by a linear combination of two or more

Answer

Correct Answer: Predictor variable

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130. Multimodal describes a distribution of observation that has ________modes

Answer

Correct Answer: More than two

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131. In multilevel linear model analysis regression parameters can be

Answer

Correct Answer: Both

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132. Multicollinearity is a situation in which two or more variables are very closely _______ related

Answer

Correct Answer: Linearly

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133. Moderation occurs when the relationship between two variables changes as a function of

Answer

Correct Answer: Third variable

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134. Mode is the ________ occurring score in a set of observations

Answer

Correct Answer: Most frequently

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135. Mixed normal distribution is a normal-looking distribution that is contaminated by a small proportion of scores from a different distribution

Answer

Correct Answer: True

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136. Method of least squares is a method of estimating parameters (such as the mean , or a regression coefficient) that is based on _______ the sum of squared errors.

Answer

Correct Answer: Minimising

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137. Which of the following is statistical procedure for assimilating research findings

Answer

Correct Answer: Meta-analysis

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138. Median is the ______ score of a set of ordered observations.

Answer

Correct Answer: Middle

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139. The discrepancy between the numbers used to represent the thing that we're measuring and the actual value of the thing we'Re measuring is called

Answer

Correct Answer: Measurement error

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140. Mean squares is a measure of

Answer

Correct Answer: Average variability

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141. It is the sum of observed scores divided by the number of observed scores.

Answer

Correct Answer: Mean

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142. If Mauchly's test is significant then the assumption of sphericity has been met

Answer

Correct Answer: False

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143. Matched-pairs t-test is

Answer

Correct Answer: A & B

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144. When using Bayes' theorem to test a hypothesis, the marginal likelihood (sometimes called evidence) is the probability of the

Answer

Correct Answer: Observed data

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145. M-estimator is a robust measure of

Answer

Correct Answer: Location

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146. Lower quartile is the value that cuts off the lower _____ of the data.

Answer

Correct Answer: 25%

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147. A form of research in which you observe what naturally goes on in the world without directly interfering with it, by measuring several variables at multiple time points is called

Answer

Correct Answer: Longitudinal research

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148. Line graph is a graph in which a summary statistic (usually the mean) is plotted on the ______ against a categorical variable on the _______.

Answer

Correct Answer: Y-axis, x-axis

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149. Linear model is a model that is based upon a straight line

Answer

Correct Answer: True

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150. Likelihood is the ______ conditional probability of the posterior probability.

Answer

Correct Answer: Inverse

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151. Levene's test basically does a two-way ANOVA on the deviations.

Answer

Correct Answer: False

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152. The relationship between what is being measured and the numbers obtained on a scale is known as

Answer

Correct Answer: Level of measurement

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153. Leptokurtic is a a distribution with ________ kurtosis

Answer

Correct Answer: Positive

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154. Latin Square Design is a method for counterbalancing tasks using an n by n grid of symbols where every symbol appears exactly ______ in every row and column

Answer

Correct Answer: Once

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155. Kurtosis measures the degree to which _________ cluster in the tails of a frequency distribution.

Answer

Correct Answer: Scores

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156. A test of whether a distribution of scores is significantly different from a normal distribution

Answer

Correct Answer: Kolmogorov-Smirnov test

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157. Kendall's tau is preferred for large data sets

Answer

Correct Answer: False

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158. Interval scale is a scale of ordered categories along the whole of which intervals are

Answer

Correct Answer: Equal

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159. Interval estimate refers to using _________ to estimate the likely value of an unknown quantity.

Answer

Correct Answer: A range of values

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160. The probability of two or more outcomes occurring simultaneously is the probability of the

Answer

Correct Answer: Intersection

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161. Interquartile range is the limit within which the middle _______ of an ordered set of observations falls.

Answer

Correct Answer: 50%

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162. Interaction graph is a graph showing the means of two or more _________ in which means of one variable are shown at different levels of the other variable.

Answer

Correct Answer: Independent variables

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163. Interaction effect is the combined effect of two or more ________ on an outcome variable

Answer

Correct Answer: Predictor variables

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164. Statistical procedures for generalizing findings based on data from a sample to the population from which that sample came

Answer

Correct Answer: Inferential statistics

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165. The value of independent variable depends upon other variables

Answer

Correct Answer: False

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166. Independent t-test is a test using the t-statistic that establishes whether two means collected from independent samples differ significantly

Answer

Correct Answer: True

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167. Independent errors is an assumption in ordinary least squares regression that says that for any two observations the residuals should be

Answer

Correct Answer: Uncorrelated

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168. Independent design is also known as

Answer

Correct Answer: Both

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169. A proposed explanation for a fairly narrow phenomenon or set of observations is termed as

Answer

Correct Answer: Hypothesis

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170. Huynh-Feldt estimate has the maximum value is

Answer

Correct Answer: 1

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171. An assumption in regression analysis that the residuals at each level of the predictor variables(s) have similar variances

Answer

Correct Answer: Homoscedasticity

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172. Homogeneity of variance is the assumption that the variance of one variable is ________ at all levels of another variable

Answer

Correct Answer: Stable

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173. Histogram is a graph with ___________ of observations on the horizontal axis, and vertical bars rising up to the frequency (on the vertical axis) with which each value occurs in the data set.

Answer

Correct Answer: Ascending values

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174. Hierarchical regression is a method of logistic regression

Answer

Correct Answer: False

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175. Heteroscedasticity occurs when the residuals at each level of the predictor variables(s) have _____ variances.

Answer

Correct Answer: Unequal

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176. Heterogeneity of variance is a term that means that the variance of one variable varies (i.e., is different) across levels of another variable.

Answer

Correct Answer: True

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177. Grouped frequency distribution is a frequency distribution in which categories on the scale of measurement are grouped using class intervals

Answer

Correct Answer: True

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178. Grounded theory is a qualitative method in which the analysis of _________ informs the development of a _________

Answer

Correct Answer: Qualitative data, theory

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179. The maximum value of Greenhouse-Geisser estimate is

Answer

Correct Answer: 1

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180. A visual display of data depicting the values or a summary of one or more variables is called

Answer

Correct Answer: Graph

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181. If a model generalises it is assumed that _________ from that model can be applied not just to the sample on which it is based, but also to a wider population from which the sample came.

Answer

Correct Answer: Predictions

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182. Frequency polygon is a graph with ascending values of observations on the __________ axis, and points displaying the frequency (on the vertical axis) with which each value occurs in the data set.

Answer

Correct Answer: Horizontal

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183. Frequency distribution is a graph or table showing the categories along a scale of measurement alongside how many scores within a data set fall into each category.

Answer

Correct Answer: True

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184. The number of times that a score, range of scores or category occurs is called

Answer

Correct Answer: Frequency

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185. Four-way design is an experimental design incorporating four

Answer

Correct Answer: A & B

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186. Forced entry regression is a method of multiple regression in which predictor variables are entered into the model, and their ___________ estimated, simultaneously

Answer

Correct Answer: Regression coefficient

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187. The degree to which a statistical model is an accurate representation of some observed data is known as

Answer

Correct Answer: Fit

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188. Fisher's exact test should be used with large samples.

Answer

Correct Answer: False

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189. ______________ is the probability of making a Type I error in any family of tests when the null hypothesis is true in each case

Answer

Correct Answer: Familywise error rate

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190. F-ratio is a test statistic with __________ probability distribution

Answer

Correct Answer: Known

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191. Probability experimentwise error rate is the probability of making a Type ___ error in an experiment involving one or more statistical comparisons when the null hypothesis is true in each case

Answer

Correct Answer: I

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192. Experimental methods is a research method in which one or more variables is systematically manipulated to see their effect (alone or in combination) on an

Answer

Correct Answer: Outcome variable

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193. Experimental hypothesis is a synonym for alternative hypothesis

Answer

Correct Answer: True

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194. Experiment (research) is a procedure to test a

Answer

Correct Answer: Hypothesis

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195. In probability theory, an __________ is a procedure that has a well-defined set of outcomes and can be repeated over several trials .

Answer

Correct Answer: Experiment

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196. In Bayes' theorem, evidence is another name for the marginal likelihood

Answer

Correct Answer: True

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197. In probability theory, an event is a subset of the __________ to which you can assign a probability.

Answer

Correct Answer: Sample space

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198. Eta squared (η²) is an effect size measure that is the ratio of the model sum of squares to the total sum of squares.

Answer

Correct Answer: True

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199. Error bar is a vertical line protruding from the end of a bar (or line) on a bar graph (or line graph) that represents the__________ of the value being displayed by the bar (or line).

Answer

Correct Answer: Precision

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200. Empirical question is a question that can be answered through collecting data such as by

Answer

Correct Answer: Both

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201. The ________ probability is the probability of an event based on the observation of many trials.

Answer

Correct Answer: Empirical

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202. In Durbin-watson test a value greater than 2 iindicates________correlation between adjacent residuals, whereas a value below 2 indicatindic_________ correlation.

Answer

Correct Answer: Negative, positive

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203. Dummy coding is a way of recording a categorical variable with two or more categories into one or more variables that are dichotomous with values of only

Answer

Correct Answer: A or B

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204. A variable that can only take on certain values is called

Answer

Correct Answer: Discrete variable

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205. Dichotomous variable is a variable that consists of only one category

Answer

Correct Answer: False

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206. Discourse analysis is a _________ method

Answer

Correct Answer: Qualitative

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207. The difference between the observed value of a variable and the value of that variable predicted by a statistical model is known as

Answer

Correct Answer: Deviance

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208. _______ statistics includes procedures for summarizing or organizing data collected from a sample

Answer

Correct Answer: Descriptive

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209. A dependent variable is a variable that is __________ by the experimenter

Answer

Correct Answer: Not manipulated

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210. Paired-samples t-test is a dependent t-test

Answer

Correct Answer: True

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211. Density is the relative ________ of a given score on a scale of measurement occurring

Answer

Correct Answer: A & B

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212. The number of scores that are free to vary when estimating some kind of statistical parameter is called

Answer

Correct Answer: Degrees of freedom

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213. Cumulative percentage is the _________ of a category in a series of ordered categories along a scale of measurement in the current category and all those preceding it expressed as the percentage of the total number of scores.

Answer

Correct Answer: Frequency

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214. The categories can be in either descending or ascending order

Answer

Correct Answer: True

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215. A form of research in which you observe what naturally goes on in the world without directly interfering with it by measuring several variables at a single time point is known as

Answer

Correct Answer: Cross-sectional research

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216. Cross-product deviation is the deviation of one variable from its mean multiplied by the other variable's deviation from its

Answer

Correct Answer: Mean

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217. Criterion validity is an evidence that standard deviation from an instrument correspond with ( concurrent validity ) or predict ( predictive validity ) external measures conceptually related to the measured construct

Answer

Correct Answer: False

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218. In Bayesian statistics a credible interval is an interval within which a certain percentage of the __________ falls (usually 95%).

Answer

Correct Answer: Posterior distribution

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219. Covariance is a measure of the 'average' relationship between two

Answer

Correct Answer: Variable

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220. Counterbalancing is a process of systematically varying the order in which experimental conditions are conducted

Answer

Correct Answer: True

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221. ___________ is a form of research in which you observe what naturally goes on in the world

Answer

Correct Answer: Casual analysis

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222. Correlation coefficient is a measure of the strength of association or relationship between

Answer

Correct Answer: Two variables

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223. A variable that can be measured to any level of precision is known as

Answer

Correct Answer: Continuous variable

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224. Contingency table is a table representing the cross-classification of two or more

Answer

Correct Answer: Categorical variable

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225. Evidence that the content of a test corresponds to the content of the construct it was designed to cover is called

Answer

Correct Answer: Content validity

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226. Something that cannot be measured directly but is indicated by things that can be measured directly is known as

Answer

Correct Answer: Construct

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227. Confounding variable is a variable that is always measured

Answer

Correct Answer: False

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228. For a given statistic calculated for a sample of observations, the confidence interval is a range of values around that statistic that are believed to contain, in a certain proportion of samples, the true value of that statistic.

Answer

Correct Answer: True

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229. The probability of an outcome given that some other outcome has already happened is called

Answer

Correct Answer: Conditional probability

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230. Concurrent validity is a form of criterion validity where there is evidence that ______ from an instrument corresponds to concurrently recorded external measures conceptually related to the measured construct.

Answer

Correct Answer: Scores

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231. In probability theory the probabilities for outcomes are complementary if they sum to

Answer

Correct Answer: 1

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232. Coefficient of determination is the proportion of__________ in one variable explained by a second variable

Answer

Correct Answer: Variance

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233. Coding is converting a variable measured on a nominal scale (e.g., a categorical variable) to a

Answer

Correct Answer: Numerical variable

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234. Classical probability is the sample space divided by the frequency of an event

Answer

Correct Answer: False

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235. The class interval width is the distance from the smallest to the largest value within the interval.

Answer

Correct Answer: True

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236. When data along an interval or ratio scale of measurement are grouped by dividing the scale into equal portions, these portions are known as

Answer

Correct Answer: Classes

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237. Chi-square test tests whether two categorical variables forming a contingency table are associated.

Answer

Correct Answer: True

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238. Chi-square distribution tends to be used to test hypotheses about __________ , and the fit of models to the observed data.

Answer

Correct Answer: Categorical data

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239. Superfluous material that distracts from the data being displayed on a graph is known as

Answer

Correct Answer: Chartjunk

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240. Chart refers to information displayed as a

Answer

Correct Answer: Any of the above

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241. Central tendency is a generic term describing a parameter or statistic that represents the centre of a frequency distribution of observations as measured by the

Answer

Correct Answer: All of the above

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242. For small samples the_________ better approximates the shape of the sampling distribution.

Answer

Correct Answer: T-distribution

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243. Any variable made up of categories of objects/entities is known as

Answer

Correct Answer: Categorical variable

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244. At the center of the boxplot is the

Answer

Correct Answer: Median

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245. Boredom effect refers to the possibility that performance in tasks may be influenced by boredom/lack of concentration if

Answer

Correct Answer: Both of the above

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246. A bootstrap sample is constructed by ________ selecting scores from an observed sample of scores

Answer

Correct Answer: Randomly

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247. Bootstrap is a technique for estimating the _____________ of a statistic of interest (e.g., the mean or the b coefficient) by taking repeated samples (with replacement) from the data set.

Answer

Correct Answer: Sampling distribution

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248. Bonferroni correction is a correction applied to the α-level to control the overall Type _____ error rate when multiple significance tests are carried out.

Answer

Correct Answer: I

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249. Bivariate correlation is a correlation between two

Answer

Correct Answer: Variables

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250. Biserial correlation is a standardized measure of the strength of relationship between two variables when one of the two variables is

Answer

Correct Answer: Dichotomous

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251. Binary variable is a categorical variable that has exactly two mutually ________ categories

Answer

Correct Answer: Exclusive

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252. A sample mean that is not equal to the population mean may be referred to as

Answer

Correct Answer: Biased estimator

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253. Bimodal is a description of a distribution of observations that has two

Answer

Correct Answer: Modes

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254. Bias corrected and accelerated (BCa) confidence interval is a variant of the percentile bootstrap confidence interval that is adjusted for _________ and to be median unbiased.

Answer

Correct Answer: Skewness

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255. Between-subjects design are independent design

Answer

Correct Answer: True

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256. Between-groups design are dependent designs

Answer

Correct Answer: False

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257. Bayes theorem states that

Answer

Correct Answer: True

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258. In probability, a Bernoulli trial is a random experiment that has ______ possible outcomes.

Answer

Correct Answer: Two

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259. Values between ________ are considered evidence for the alternative hypothesis that is 'barely worth mentioning'

Answer

Correct Answer: 1 and 3

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260. Bar graph is a graph in which a summary statistic (usually the mean) is plotted on the ____ against a categorical variable on the _____

Answer

Correct Answer: Y-axis, x-axis

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261. Cohen⁵⁰ suggests a maximum value of β-level to be

Answer

Correct Answer: 0.2

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262. Average is an alternative name for

Answer

Correct Answer: A & B

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263. Arithmetic mean is an alternative name for the mode

Answer

Correct Answer: False

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264. The prediction that there will be

Answer

Correct Answer: Effect

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265. P(A U B) = P(A) + P(B) Is additive law?

Answer

Correct Answer: True

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266. Abscissa is the _________ axis of a graph.

Answer

Correct Answer: Horizontal

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267. Usually the value of α-level is

Answer

Correct Answer: 0.05

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